IPS or the Indian Police Service is one of the most prestigious services in India.Here are the eligibility criteria:

The applicant must be at least 21 years of age at the time of filling the Civil Services (Preliminary) Exam form and not more than 30 years of age.

The applicant should have a graduate degree in any discipline of any of the Universities incorporated by an Act of Central or State legislature in India or other educational institutions established by an Act of Parliament.
Physical Requirements
Minimum height of 165 cm for Men and 150 cm for Women
Min Chest girth fully expanded: 84 cm for Men and 79 cm for Women
Total amount of Myopia (including the cylinder) should not exceed minus 4.00 D and total amount of Hypermetropia (including the cylinder) should not exceed plus 4.00 D